Hardware Troubleshooting
Fix 3.3V I2C Sensor (BMP280 / BME280) Overheating on Arduino Uno 5V I2C Bus
3.3V BMP280 or BME280 sensor getting hot or dying when wired to Arduino Uno A4/A5 I2C pins? Learn how Wire.begin() enables 5V pull-ups and how to level-shift safely.
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